JP3070905B2 - Roof trim mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a roof trim mounted on a roof panel.
The present invention relates to a roof trim mounting structure capable of preventing generation of unpleasant noise such as rubbing noise between a roof trim and a roof panel.

[0002]

2. Description of the Related Art In recent years, PPO (polyphenylene oxide) resin foam has attracted attention because it is desirable that a roof trim installed in a roof panel of an automobile is lightweight and has excellent rigidity and heat resistance. Have been.

FIG. 8 shows the overall structure of the roof trim 1. To attach the roof trim 1 to the roof panel 7, a clip mounting method is frequently used as shown in FIG.

That is, the roof trim 1 has a structure in which a skin material 3 such as a cloth is adhered to a surface of a core material 2 made of a PPO resin base material or the like. The rear edge 1b of the roof trim 1 is clipped in a state of being locked to the panel, and a bracket 4 made of an ABS resin plate or the like is provided on the back surface of the rear edge 1b of the roof trim 1 via a hot melt 5. After the clip 6 is inserted into and fixed to the bracket 4, the fitting piece of the clip 6 is press-fitted into the mounting hole 7 a of the roof panel 7, so that the roof trim 1 is fixed to the roof panel 7. To attach it.

[0005] The clip 6 is mounted on a clip mounting seat 8 provided on the bracket 4. The clip mounting seat 8 is provided with projections 9 for contacting the roof panel 7 at each corner. , The vertical movement of the roof trim 1, that is, the movement of the roof trim 1 away from the roof panel 7 is restricted.

[0006]

As described above, when the projections 9 that come into contact with the roof panel 7 are set on the bracket 4, the temperature in the vehicle interior, especially the ceiling, becomes extremely high.
Due to the difference in the thermal expansion and contraction ratio between the roof panel 7 and the roof trim 1, thermal deformation, particularly expansion and contraction along the front-rear direction, easily occurs in the roof trim 1, and sliding friction resistance between the roof panel 7 and the projection 9 is increased. Therefore, it has been pointed out that unpleasant sounds are likely to be generated, the sound is unpleasant, and the driver cannot concentrate on driving.

[0007] Furthermore, it has been pointed out that the frictional resistance between the roof panel 7 and the projections 9 causes the coating of the roof panel 7 to peel off, rust is easily generated, and the durability of the roof panel 7 is reduced. Was.

In addition, there are cases where the four projections 9 do not come into contact with the roof panel 7 due to mounting errors, dimensional errors, thermal deformation, and the like of the roof trim 1. In this case, the clip 6 is securely held. However, there was a disadvantage that it could not be expected.

The present invention has been made in view of such circumstances, and can prevent the generation of unpleasant noise such as a rubbing noise between a roof trim and a roof panel with a simple configuration, and can reliably secure a clip. An object of the present invention is to provide a roof trim mounting structure capable of holding.

[0010]

In order to achieve the above-mentioned object, the present invention is directed to a clip which is attached to a bracket fixed to a predetermined portion of a back surface of a roof trim in which a skin material is adhered to a core material surface. In a roof trim mounting structure for mounting a roof trim to a roof panel, projections projecting toward a roof panel are formed on both sides of a clip seat provided on the bracket, and extend in both sides of a mounting hole of the roof panel in a longitudinal direction of the vehicle. An elongated hole is formed, and the projection is fitted into the elongated hole such that both side surfaces of the projection come into line contact or point contact with each other.

As the above-mentioned projection, a projection or a conical cylinder along the longitudinal direction of the vehicle can be used so as to make line contact or point contact with the long hole on the roof panel side.

Further, the projection can be provided integrally with the clip seat.

[0013]

As is apparent from the above configuration, when the roof trim is mounted on the roof panel via the clip, the projection provided on the bracket fits into the long hole of the roof panel, and both side surfaces of this projection are elongated holes. Because of the line contact or the point contact, the sliding resistance between the roof panel and the bracket is greatly reduced even when the roof trim expands and contracts due to environmental temperature fluctuations.

Further, since the projections provided on both sides of the clip seat are fitted into the long holes of the roof panel, it is possible to regulate the displacement and movement of the roof trim along the vehicle width direction.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a roof trim mounting structure according to an embodiment of the present invention;

FIG. 1 is an overall view showing a first embodiment of a roof trim mounting structure according to the present invention, FIGS. 2 and 3 are sectional views showing a roof trim mounting structure, and FIG. 4 is a projection provided on a bracket. FIG. 4 is an explanatory view showing a state in which is fitted in a long hole of a roof panel.

FIGS. 5 to 7 show a second embodiment of a roof trim mounting structure according to the present invention. FIG. 5 is a perspective view of a bracket used in the second embodiment, and FIG. FIG. 7 is a cross-sectional view showing a mounting structure of a roof trim according to the embodiment, and FIG. 7 is an explanatory view showing an operation of a projection provided on a bracket according to the second embodiment.

1 and 2, the roof trim 10
Is a core material 11 using a PPO resin base material, and the core material 1
Cloth, non-woven fabric, etc. skin material bonded and fixed to one surface 1
2 is formed.

More specifically, the core 11 is made of PPO
PPO resin skin layer 11b on the front and back of resin foam layer 11a
Are integrally formed, and the PPO resin in the present embodiment is not pure PPO but is modified by adding polystyrene in consideration of cost and the like.

Further, the basis weight of the PPO resin foam layer 11a is 500 to 600 g / m ² ,
The thickness of b is 0.18 mm, and the total thickness of the PPO resin base material at the time of raw material 3.5 mm is 130 to
In the state of being softened by heating to 140 ° C., the total thickness of the PPO resin base material has expanded to 6 to 8 mm, and thereafter, the core material 11 is obtained by cold press molding so that the total thickness is set to 5 mm. Can be

On the other hand, a cloth is used as the skin material 12, and a hot melt film (not shown) is laminated on the back surface of the cloth.
After preheating, the skin material 12 and the core material 11 are firmly integrated via the hot melt film.

The skin material 12 may be a non-woven fabric.

A bracket 20 made of an ABS resin plate is provided at appropriate intervals along the rear edge of the back surface of the core material 11.
Are fixed via a hot melt 30, and a clip 40 is attached to the bracket 20.

In order to attach the roof trim 10 to the roof panel 50, the front end of the roof trim 10 is engaged with the roof panel 50 and is inserted into the mounting hole 51 of the roof panel 50 at the rear edge of the rear surface of the roof trim 10. The roof trim 10 is mounted on the roof panel 50 by press-fitting the mounted clip 40.

The roof panel 50 has a mounting hole 51
Embossed recess 52 approximately equal to bracket 20 around
The roof trim 10 and the roof panel 5
The clearance between 0 is set small.

By the way, the feature of the present invention is that even if a thermal expansion / contraction action occurs in the roof trim 10, the generation of rubbing noise between the roof trim 10 and the roof panel 50 is suppressed, and the vehicle width of the roof trim 10 is reduced. It is an object of the present invention to provide a mounting structure for a roof trim 10 in which a movement or a positional deviation in a direction is restricted and a reliable mounting accuracy of the roof trim 10 to a roof panel 50 is guaranteed.

That is, a clip seat 21 for mounting the clip 40 is formed on the bracket 20, and a ridge 22 extending forward and rearward is formed on both sides of the clip seat 21.

The ridge 22 has a trapezoidal cross section such that both side surfaces 22a are inclined as shown in the figure.

On the other hand, the roof panel 50 is similarly formed with a long hole 53 extending in the longitudinal direction so as to correspond to the ridge 22 formed on the bracket 20.

Therefore, when the roof trim 10 is attached to the roof panel 50, as shown in FIGS. 3 and 4, both side surfaces 22a of the ridge 22 and the edge of the long hole 53 of the roof panel 50 are in line contact. So that the ridge 22 is elongated
Fit inside.

For example, even if the roof trim 10 expands and contracts due to fluctuations in the environmental temperature, the sliding resistance between the roof panel 50 and the bracket 20 is greatly reduced due to the line contact between the roof panel 50 and the bracket 20. Unpleasant noise such as noise does not occur, and the coating on the surface of the roof panel 50 does not peel off, so that the durability of the roof panel 50 is improved.

Further, the ridge 2 provided on the bracket 20
After the roof trim 10 is attached to the roof panel 50, the vertical movement of the roof trim 10 can be restricted by the relationship between the roof panel 50 and the elongated hole 53 of the roof panel 50, and the displacement along the vehicle width direction can be reduced. There is an advantage that the movement can be restricted and the mounting accuracy of the roof trim can be improved.

FIGS. 5 to 7 show a second embodiment of the mounting structure of the roof trim 10 according to the present invention. As shown in FIG. The conical cylindrical body 23 is attached to the roof panel 50 on both sides.
It is formed projecting toward the side.

Also in this embodiment, if the clip 40 is mounted on the clip seat 21 of the bracket 20 and the clip 40 is mounted in the mounting hole 51 of the roof panel 50, the clip 40 is provided on both sides of the mounting hole 51. The conical cylindrical body 23 fits into the long hole 53, and the edge of the long hole 53 and the conical cylindrical body 23 are in a point contact state.

Therefore, the roof panel 50 and the bracket 2
0 indicates a point contact state due to the relationship between the conical cylindrical body 23 and the elongated hole 53. For example, even if an expansion and contraction force acts on the roof trim 10 due to a change in environmental temperature, the sliding resistance between the two is extremely low. The size of the roof panel 50 is small, and the occurrence of rubbing noise, which has conventionally occurred, is almost completely eliminated, and the disadvantage of peeling off the paint on the roof panel 50 is effectively solved.

Similarly to the first embodiment, the movement of the roof trim 10 in the vehicle width direction can be restricted.

[0037]

As described above, the present invention has the following special functions and effects.

(1) In the roof trim mounting structure according to the present invention, a trapezoidal convex or conical cylindrical body extending in the front-rear direction of the vehicle is provided on both sides of the clip mounting seat of the bracket, and the roof panel is provided. The side is these ridges,
When the roof trim is attached to the roof panel via the clip attached to the clip mounting seat of the bracket, the roof panel is installed in the slot of the roof panel because the slot has a long hole that makes line contact or point contact with the conical cylindrical body. Even if the ridge or the conical cylindrical body provided on the bracket fits in and the difference in heat shrinkage between the roof trim and the roof panel causes the roof trim to expand or contract, the length of the roof panel may be reduced. Since the projections on the bracket side are in line contact and point contact with the hole, sliding resistance is greatly reduced, low noise such as rubbing noise can be effectively prevented, and quietness in the vehicle interior can be maintained. At the same time, the problem of peeling off the surface coating of the roof panel due to the rubbing can be solved at the same time, and there is an effect that the durability of the roof panel can be improved.

(2) In the roof trim mounting structure according to the present invention, a convex strip extending in the longitudinal direction of the vehicle with a trapezoidal cross section is provided on both sides of the clip seat of the bracket, or a conical cylindrical body is provided. On the roof panel side, a long hole is formed to insert the convex body or the conical cylindrical body. Therefore, when the roof trim is attached to the roof panel via a clip, the roof trim moves in the vertical direction. And the displacement or displacement along the vehicle width direction can be effectively regulated, and the installation accuracy of the roof trim can be increased.

[Brief description of the drawings]

FIG. 1 is an overall view showing a first embodiment of a roof trim mounting structure according to the present invention.

FIG. 2 is a cross-sectional view showing a first embodiment of a roof trim mounting structure according to the present invention.

FIG. 3 is a sectional view showing a first embodiment of a roof trim mounting structure according to the present invention.

FIG. 4 is an explanatory view showing the operation of the first embodiment of the roof trim according to the present invention.

FIG. 5 is a perspective view showing a bracket used in a second embodiment of the roof trim mounting structure according to the present invention.

FIG. 6 is a sectional view showing a second embodiment of the roof trim mounting structure according to the present invention.

FIG. 7 is an explanatory view showing the operation of the second embodiment of the roof trim mounting structure according to the present invention.

FIG. 8 is a perspective view showing a roof trim.

FIG. 9 is a sectional view of a main part showing a conventional roof trim mounting structure.

FIG. 10 is an overall view showing a conventional roof trim mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Roof trim 11 Core material 12 Skin material 20 Bracket 21 Clip seat 22 Convex stripe 23 Conical cylindrical body 40 Clip 50 Roof panel 51 Mounting hole 53 Slot

Continuation of the front page (56) References JP-A-7-179154 (JP, A) JP-A-59-121213 (JP, A) JP-A 6-988 (JP, U) JP-A 5-64001 (JP) , U) Japanese Utility Model Hei 6-35050 (JP, U) Japanese Utility Model Showa 62-1006853 (JP, U) Japanese Utility Model Showa 62-112637 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB Name) B60R 13/02

Claims (4)

(57) [Claims] 1. A clip (40) attached to a bracket (20) fixed to a predetermined position on the back of a roof trim (10) having a skin (12) adhered to the surface of a core (11).
Roof trim (10) to the roof panel (50) via the
In the mounting structure of the roof trim, the projections (22, 22) projecting toward the roof panel (50) are provided on both sides of the clip seat (21) provided on the bracket (20).
23) are formed, and the mounting holes (5) of the roof panel (50) are formed.
On both sides of 1), elongated holes (53) extending in the longitudinal direction of the vehicle are opened, and the projections (22, 23) are provided in the elongated holes (53).
The protrusions (22, 23) are fitted into the elongated holes (53) such that both side surfaces (22a, 23a) are in line contact or point contact with each other. 2. The projection (22) formed on the bracket (20) is a ridge (22) having a trapezoidal cross section and extending along the longitudinal direction of the vehicle. The roof trim mounting structure according to claim 1, wherein the side surfaces (22a) and the edges of the long holes (53) are in line contact with each other. 3. The projection (23) formed on the bracket (20) has a conical cylindrical body (2) whose tip end side has a gradually decreasing diameter.
3. The roof trim mounting structure according to claim 1, wherein the peripheral surface (23a) of the conical cylindrical body (23) and the edge of the elongated hole (53) are in point contact with each other. 4. The projection (22, 23) has a clip seat (2).
4. The roof trim mounting structure according to claim 1, wherein the roof trim is formed integrally with the roof trim.